Communication security for wireless sensor networks (WSN) is a challenge due to the limited computation and energy resources available at nodes. We describe the design and implementation of a public-key (PK) platform ...
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ISBN:
(纸本)9781595939906
Communication security for wireless sensor networks (WSN) is a challenge due to the limited computation and energy resources available at nodes. We describe the design and implementation of a public-key (PK) platform based on a standard Trusted Platform Module (TPM) chip that extends the capability of a standard node. the result facilitates message security services such as confidentiality, authenticity and integrity. We present results including computation time, energy consumption and cost.
In this paper we present preliminary work oil integrating visual sensing withthe more traditional sensing modalities for marine locations. We have deployed visual sensing at one of the Smart Coast WSN sites in Irelan...
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ISBN:
(纸本)9781595939906
In this paper we present preliminary work oil integrating visual sensing withthe more traditional sensing modalities for marine locations. We have deployed visual sensing at one of the Smart Coast WSN sites in Ireland and have built a software platform for gathering and synchronizing all sensed data. We describe how the analysis of a range of different sensor modalities can reinforce readings from a given noisy, unreliable sensor.
sensor networks using mobile robots have recently been proposed to provide more flexible and efficient sensing. However, mobile robots in a practical world have many accidents with actuator or communication devices es...
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ISBN:
(纸本)9781595939906
sensor networks using mobile robots have recently been proposed to provide more flexible and efficient sensing. However, mobile robots in a practical world have many accidents with actuator or communication devices especially in their traveling to the destination. Moreover, in the practical world, there are many obstacles and bad conditioned area for both wireless and movement of mobile robots. In this paper, we introduce a practical scheme for delivering data with concerning a practical world issues.
In this work we present two mobile, locative and collaborative distributed games that are played using wireless sensor devices. We briefly present the architecture of the two games and demonstrate their capabilities. ...
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ISBN:
(纸本)9781595939906
In this work we present two mobile, locative and collaborative distributed games that are played using wireless sensor devices. We briefly present the architecture of the two games and demonstrate their capabilities. the key characteristic of these games is that players interact with each other and their surrounding environment by moving, running and gesturing as a means to perform game related actions, using sensor devices. We demonstrate our system's implementation, which uses a combination of JAVA Standard and Mobile editions.
In this paper, we present the Flash flooding protocol that exploits the capture effect to produce low-latency network floods. the capture effect is the ability of some radios to correctly receive one of several concur...
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ISBN:
(纸本)9781595939906
In this paper, we present the Flash flooding protocol that exploits the capture effect to produce low-latency network floods. the capture effect is the ability of some radios to correctly receive one of several concurrently transmitted messages, even if the received strengths of the two messages are almost the same. We exploit this phenomenon in a network flooding scenario by allowing nodes to propagate the flooding message concurrently, thus reducing delays due to neighborhood contention. Our experimental results indicate that Flash can reduce latency by 75-80 percent without sacrificing flooding reliability or coverage.
there are numerous possibilities to assemble a very resource-efficient and power-aware distributed sensor network tailored to a specific application. However, the task of initializing the network has not yet attracted...
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ISBN:
(纸本)9781595939906
there are numerous possibilities to assemble a very resource-efficient and power-aware distributed sensor network tailored to a specific application. However, the task of initializing the network has not yet attracted much attention. this paper presents the NoSE (Neighbor Search and link Estimation) initialization scheme. NoSE provides all exhaustive neighbor search including a thorough link assessment, leveraging both high reactivity and greatly minimized energy consumption. Based on the information obtained in the initial link assessment phase, a routing protocol earl subsequently set up and use an optimized network topology.
Most debris flow monitoring systems deployed today use indirect means to track information regarding debris flows. In this work, we introduce a novel debris flow monitoring system for in-situ and direct tracking of de...
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ISBN:
(纸本)9781595939906
Most debris flow monitoring systems deployed today use indirect means to track information regarding debris flows. In this work, we introduce a novel debris flow monitoring system for in-situ and direct tracking of debris flows in real-time. the core idea is to throw wireless sensors into the debris flows and collect flow information as they move along. We will describe the design of the wireless sensors and present some preliminary performance results.
this paper outlines an efficient variation of the Flooding Time Synchronization Protocol (FTSP) on real hardware with an IEEE 802.15.4 MAC layer. the paper compares the performance of two clock drift estimation techni...
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ISBN:
(纸本)9781595939906
this paper outlines an efficient variation of the Flooding Time Synchronization Protocol (FTSP) on real hardware with an IEEE 802.15.4 MAC layer. the paper compares the performance of two clock drift estimation techniques: Least;Squares Linear Regression and the Kalman filter. In assessing the viability of time synchronization in an industrial setting, our reliance on real hardware gives confidence for the deployment in future products. the concrete result is a high time synchronization accuracy, with An achievable average error of 0.4 mu s, and a repetition interval of a few seconds, while using a star network topology.
As the number of wireless devices increase, the frequency spectrum becomes further congested. Deployments of wireless devices in harsh radio environments (i.e. an industrial plant) also motivates the study of alternat...
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ISBN:
(纸本)9781595939906
As the number of wireless devices increase, the frequency spectrum becomes further congested. Deployments of wireless devices in harsh radio environments (i.e. an industrial plant) also motivates the study of alternate communication protocols that offer enough diversity to overcome interference. this work explores the use of frequency diversity to address this problem and examines its effectiveness in various environmental settings. We also examine the interplay between frequency agility at the MAC layer and route diversity in the network layer and look to understand the cost-tradeoffs in the diversity of choices offered by each layer.
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